displayTemplate

 displayTemplate - Display the symbolic template of an active basis template.

0001 function sym = displayTemplate(selectedRow,selectedCol,selectedO, selectedS,selectedMean,allsymbol,nGaborOri,subsample)
0002 % displayTemplate - Display the symbolic template of an active basis template.
0003 
0004 %% determine the rectangular size of the template
0005 % Note: The row/column indices are relative to the origin (0,0).
0006 maxScale = max(selectedS); % starts from 0
0007 margin = ceil( size(allsymbol{maxScale*nGaborOri+1},1) / 2 ); % to allow enough space for Gabor symbol
0008 selectedRow = selectedRow * subsample;
0009 selectedCol = selectedCol * subsample;
0010 selectedS = selectedS + 1; % now starts from 1
0011 top = min(selectedRow);
0012 down = max(selectedRow);
0013 left = min(selectedCol);
0014 right = max(selectedCol);
0015 height = down - top + 2 * margin;
0016 width = right - left + 2 * margin;
0017 % make it square:
0018 if height > width
0019     width = height;
0020 else
0021     height = width;
0022 end
0023 
0024 %% display Gabor symbols one by one
0025 nGaborScale = numel(allsymbol) / nGaborOri;
0026 sym = zeros(height,width);
0027 for k = 1:length(selectedRow)
0028     scale = selectedS(k);
0029     ori = selectedO(k) + 1;
0030     col = selectedCol(k) + floor(width/2);
0031     row = selectedRow(k) + floor(height/2);
0032     if scale < 1 || scale > nGaborScale
0033         continue;
0034     end
0035     sym = drawGaborSymbol( sym, allsymbol, row, col, ori, nGaborOri, scale, sqrt(selectedMean(k)) );
0036 end
0037 sym = uint8(255 * (sym-min(sym(:)))/(max(sym(:))-min(sym(:))));
0038 
0039